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    "support_level": "stable"
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      "in1": {},
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      "radiusY": {},
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      "SVG_STITCHTYPE_NOSTITCH": {},
      "SVG_STITCHTYPE_STITCH": {},
      "SVG_STITCHTYPE_UNKNOWN": {},
      "SVG_TURBULENCE_TYPE_FRACTALNOISE": {},
      "SVG_TURBULENCE_TYPE_TURBULENCE": {},
      "SVG_TURBULENCE_TYPE_UNKNOWN": {},
      "baseFrequencyX": {},
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      "numOctaves": {},
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      "seed": {},
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      "filterUnits": {},
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      "primitiveUnits": {},
      "setFilterRes": {},
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      "SVG_SPREADMETHOD_REPEAT": {},
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      "SVG_LENGTHTYPE_EXS": {},
      "SVG_LENGTHTYPE_IN": {},
      "SVG_LENGTHTYPE_MM": {},
      "SVG_LENGTHTYPE_NUMBER": {},
      "SVG_LENGTHTYPE_PC": {},
      "SVG_LENGTHTYPE_PERCENTAGE": {},
      "SVG_LENGTHTYPE_PT": {},
      "SVG_LENGTHTYPE_PX": {},
      "SVG_LENGTHTYPE_UNKNOWN": {},
      "convertToSpecifiedUnits": {},
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      "valueAsString": {},
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    "dart_action": "unstable",
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    "support_level": "stable"
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      "SVG_MARKERUNITS_USERSPACEONUSE": {},
      "SVG_MARKER_ORIENT_ANGLE": {},
      "SVG_MARKER_ORIENT_AUTO": {},
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      "markerHeight": {},
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      "setOrientToAngle": {},
      "setOrientToAuto": {},
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      "flipX": {},
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      "rotate": {},
      "rotateFromVector": {},
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      "scaleNonUniform": {},
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      "SVG_PAINTTYPE_RGBCOLOR": {},
      "SVG_PAINTTYPE_RGBCOLOR_ICCCOLOR": {},
      "SVG_PAINTTYPE_UNKNOWN": {},
      "SVG_PAINTTYPE_URI": {},
      "SVG_PAINTTYPE_URI_CURRENTCOLOR": {},
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      "SVG_PAINTTYPE_URI_RGBCOLOR_ICCCOLOR": {},
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      "setPaint": {},
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      "createSVGPathSegCurvetoCubicAbs": {},
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      "createSVGPathSegCurvetoCubicSmoothAbs": {},
      "createSVGPathSegCurvetoCubicSmoothRel": {},
      "createSVGPathSegCurvetoQuadraticAbs": {},
      "createSVGPathSegCurvetoQuadraticRel": {},
      "createSVGPathSegCurvetoQuadraticSmoothAbs": {},
      "createSVGPathSegCurvetoQuadraticSmoothRel": {},
      "createSVGPathSegLinetoAbs": {},
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      "createSVGPathSegMovetoAbs": {},
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      "PATHSEG_CURVETO_CUBIC_REL": {},
      "PATHSEG_CURVETO_CUBIC_SMOOTH_ABS": {},
      "PATHSEG_CURVETO_CUBIC_SMOOTH_REL": {},
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      "PATHSEG_CURVETO_QUADRATIC_REL": {},
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      "PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL": {},
      "PATHSEG_LINETO_ABS": {},
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      "PATHSEG_LINETO_HORIZONTAL_REL": {},
      "PATHSEG_LINETO_REL": {},
      "PATHSEG_LINETO_VERTICAL_ABS": {},
      "PATHSEG_LINETO_VERTICAL_REL": {},
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      "href": {
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      "patternContentUnits": {},
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      "systemLanguage": {
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    "dart_action": "unstable",
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    "dart_action": "unstable",
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      "requiredFeatures": {
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      "transform": {
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    },
    "support_level": "stable"
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      "SVG_PRESERVEASPECTRATIO_UNKNOWN": {},
      "SVG_PRESERVEASPECTRATIO_XMAXYMAX": {},
      "SVG_PRESERVEASPECTRATIO_XMAXYMID": {},
      "SVG_PRESERVEASPECTRATIO_XMAXYMIN": {},
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      "RENDERING_INTENT_PERCEPTUAL": {},
      "RENDERING_INTENT_RELATIVE_COLORIMETRIC": {},
      "RENDERING_INTENT_SATURATION": {},
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      "contentStyleType": {},
      "createSVGAngle": {},
      "createSVGLength": {},
      "createSVGMatrix": {},
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      "createSVGTransformFromMatrix": {},
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    "dart_action": "unstable",
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      "SVG_UNIT_TYPE_UNKNOWN": {},
      "SVG_UNIT_TYPE_USERSPACEONUSE": {}
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    "dart_action": "unstable",
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      "y": {}
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    "support_level": "stable"
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